The original Lotus 7 was just under 1,000 lbs. Problem with those is the frame cracked just behind the seats. Caterham worked for Lotus and bought the production rights when lotus decided to cease production. Caterham put braces and brackets in to strengthen the frames. Depending on the engine chosen, curb weight was up to 1,200# to 1,300#. They have one model called the 620R. The 620 refers to HP per ton. A fair handfull. That is in comparison to a new Challenger, Camaro or Mustang at 1,100HP, and any of those will have traction control and stability control, which the Caterham does not have. Caterham has a few models with more sedate drivetrains. One new one goes back to more like the original with a modern 3 cylinder engine. Still a responsive street performer.